In the Redirect Authorisation Approach, the browser session of the customer (PSU) is redirected from the Initiating Party to the ASPSP Mock. In that case the ASPSP Mock provides all the pages required for authentication (usually username, password). After that the customer (PSU) is redirected to the TPP solution and from there back to the Initiating Party (user).
Take the following steps to complete this scenario.
Step – 1 : Get the reach details :
Reach details provides list of APIs needs to be used for this scenario and mandatory fields needs to be passed for successful API call towards ASPSP mock.
Call the reach API – GET /aspsp. Get the ASPSP details with Name = “Payment Redirect” and the ASPSP ID = “20100”, which has to be used to initiate the payment with redirect mode of authorisation and other further payment related requests.
Remark : Details of reach information provided in developer portal are limited and informational purpose to give initiating party (user) an idea about how reach information looks like. Initiating party (user) can skip this step and use specified ASPSP ID for the scenario to try out. User can get the ASPSP ID for appropriate scenario from "Scenario Guideline" page or from the list of "Payment Initiation Scenarios" page.
Step – 2 : Initiate the payment :
Call the POST /payments API with mandatory fields in request header and body. In response of POST /payments, initiating party (user) will receive payment ID, ASPSP redirect link to authorise the initiated payment and link to call GET /payments/status API to get the status of the initiated payment.
If GET /payments/status endpoint has been called before user provides his / her approval, initiating party (user) will receive payment status = “Open” from the ASPSP Mock in response.
Step – 3 : Authorise or Cancel the payment at ASPSP Mock :
With ASPSP redirect link received in response of POST /payments, customer (PSU) will get redirect to ASPSP Mock GUI login page. On this login page, customer (user) can provide dummy credential details as this is example purpose only. Once customer (PSU) provides his / her dummy credentials, he / she will be redirected to ASPSP Mock GUI page with “Approve” & “Deny” buttons to authorise or cancel the payment.
If customer (PSU) “Approve” the payment, payment will get initiated with the ASPSP Mock and customer (PSU) will redirect back to initiating party (user).
If customer (PSU) “Deny” the payment, ASPSP Mock will reject the initiated payment and customer (PSU) will redirect back to initiating party (user).
Remark : GUI page of ASPSP Mock to approve or deny the payment is just a demo purpose. Actual ASPSP GUI page to approve or deny the payment may vary based on ASPSP.
Step – 4 : Get the payment status :
Call the GET /payments/status API to get the latest payment status from ASPSP Mock.
If payment is authorised by customer (PSU), initiating party (user) will receive payment status = “Settlement Completed” as final payment status.
If payment is deny by customer (PSU), initiating party (user) will receive payment status = “Cancelled” as final payment status.
Remark : Payment status provided for this scenario is just to guide initiating party (user) for payment initiation process. Actual payment status may vary based on scenario from actual ASPSP.
Sequence Diagram :
